3.The values stated in either inch-pound units or si units are to be regarded separately as standard. Within the text, the si units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. The inch-pound units shall apply unles designation of this specification is specified in the order. Note: Mill test certificates will be issued according to en10204.3 All tubes shall be supplied as per applicable astm specification. The tubes shall be seamless and the testing shall be as per a 450 / a450m. Application: apply to the heat exchangers, condensers and heat transfer equipment and similar pipe.
